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Full Discussion: Eval and get awk output assigned to variable
Top Forums Shell Programming and Scripting Eval and get awk output assigned to variable Post 302945420 by bakunin on Friday 29th of May 2015 06:29:34 AM
Old 05-29-2015
Quote:
Originally Posted by ezee
Code:
eval "ade desc ${filename}@@/<branch_name> | grep Version | awk '{print $2}' 2>&1 1>/dev/null"
ret=$?

I can only emphasize what RudiC has said. Generally speaking: if you ever write a line with awk and grep ending in the same pipeline you are doing something wrong. In your case

Code:
... | awk '/Version/ {print $2}' | ....

will do the same as

Code:
... | grep "Version" | awk '{print $2}' | ....

Furthermore, the eval should only be used as a very last measure. In 99% of the time it is better to avoid it. I can't even see what the purpose of it should be in your case. Care to explain what, in fact, you are trying to do (the big picture, not the syntactical problem you had)?

I hope this helps.

bakunin
 

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LEARN ABOUT LINUX

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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